Twitter has announced that it will not block the accounts of world leaders even if their statements are controversial. Citing a need to promote a public conversation on political issues, it said, Twitter is here to serve and help advance the global public conversation. <br/><br/>The California-based company said elected world leaders to play a critical role in that conversation because of their outsized impact on our society. It said, blocking a world leader from Twitter or removing their controversial tweets will hide important information people should be able to see and debate. <br/><br/>The announcement came just days after a tweet from President Donald Trump about US nuclear weapons sparked criticism that the social network is allowing threats of violence. Earlier, some activists said Twitter should have banned Trump. <br/>